Volume of a cylinder = \pir\(^2\)h First convert 3m to cm by multiplying by 100 Volume of External cylinder = \(\pi \times 13^2 \times 300\) Volume of Internal cylinder = \(\pi \times 10^2 \times 300\) Hence; Volume of External cylinder - Volume of Internal cylinder Total volume (v) = \(\pi (169 - 100) \times 300\) V = \(\pi \times 69 \times 300\) V = 20700\picm\(^3\)